1. The evolution of the family has certainly not proceeded in all places in the same way, a circumstance which always permits the critic to oppose facts to the view he is combating. A disease inherent in the human mind induces most writers to try and refer everything to _one_ formula, to impose on facts that perfect unity which, in such matters, does not appear very probable. Those who assign the greatest length of time to the evolution of the family admit three stages: promiscuity, matriarchate, patriarchate. The period of primitive promiscuity (Bachofen, MacLennan, Girard-Teulon, etc.) is contested and rejected by many authorities. In any case, it does not seem as if we could establish the rule without a great number of exceptions. Not to speak, however, of archaic institutions which have been interpreted in this sense, and as survivals, there are still certain Tartar populations which approach this stage. At Hawaii, the individual was related to the whole horde, age alone determining the relationships: every one called all the old people indiscriminately grandfather and grandmother; all those who, as far as age went, might be his parents, father and mother; all those of his own generation, brothers and sisters; and so on for sons and daughters, grandsons and grand-daughters. These five terms expressed all known degrees of kinship. We may note, in passing, that a very weak psychological argument has been put forward in order to disprove the existence of this period—viz., that the natural jealousy of man would have rendered promiscuity impossible, at least for any length of time. Those who have hazarded such reasoning have been too ready to judge primitive man by civilised standards. However this may be, such a mass, without individual relationships, is rather a society than a family; or rather, it is an undifferentiated state, which might be compared to the lowest form of animal societies (the nutritive), which also is undifferentiated.